Commissioning Engineer, MEP & Electrical Systems

Ferrovial Construction Canada Inc. and VINCI Construction Grands Projects are undertaking the design, build, and finance the Ontario Line Southern Civil, Stations, and Tunnel (South Civil) package.

As Ontario Transit Group, we are now mobilizing our design and construction crews, with major works. The South Civil contract is anticipated to be completed in 2030.

The project will strengthen Ontario’s economy by supporting an estimated 1,500 jobs at the peak of construction.

What is the project?

• A six-kilometer tunnel and associated tunnelling works from Exhibition to Don Yard portal (west of the Don River).
• Stations:
  • One above-ground station to be integrated with the existing GO Transit Exhibition Station.
  • Two underground stations to be integrated with the existing TTC Osgoode and Queen subway stations.
  • Four new underground stations (King/Bathurst, Queen/Spadina, Moss Park, Corktown).

Job Description

The Commissioning Engineer is responsible for leading the planning, coordination, and execution of commissioning activities for mechanical and electrical systems, ensuring all systems are installed, tested, and operating in full compliance with project specifications, applicable codes, and client requirements. This role requires close collaboration with specialized subcontractors and project teams, along with oversight of commissioning procedures, documentation, and system performance.

The Commissioning Engineer is accountable for a range of systems, including boilers for snow melting, diesel generator sets, air handling units (AHUs), heat pumps, domestic water and sanitary pumping systems, electrical switchgear (medium and low voltage), power transformers, and low-voltage electrical distribution systems, ensuring all are delivered safely, efficiently, and to the highest standards of quality and performance.

The salary range for this position is $125,000 CAD - $155,000 CAD, plus additional benefits.

Key Responsibilities:

Commissioning & Testing

• Plan, manage, and execute commissioning activities for all assigned mechanical and electrical systems.
• Ensure systems are commissioned in accordance with approved specifications, drawings, standards, and manufacturer recommendations.
• Witness and verify factory acceptance tests (FAT), site acceptance tests (SAT), pre-commissioning, functional testing, and performance testing.
• Identify, record, and track commissioning issues, deficiencies, and non-conformities until closure.

Subcontractor Coordination

• Lead and coordinate commissioning activities carried out by specialist subcontractors responsible for the systems.
• Ensure subcontractors follow approved commissioning plans, methods, and safety procedures.
• Monitor subcontractor performance, schedules, and deliverables to ensure alignment with project milestones.

Procedures & Documentation

• Review, evaluate, and comment on commissioning procedures, method statements, test scripts, and checklists submitted by subcontractors.
• Propose corrections, improvements, or modifications to procedures to ensure technical accuracy and compliance.
• Ensure all commissioning records, test results, and as-built documentation are completed, accurate, and properly submitted.
• Support preparation of operation and maintenance (O&M) manuals and system handover documentation.

Coordination & Interface Management

• Coordinate commissioning activities with construction, QA/QC, HSE, project management, consultants, and client representatives.
• Ensure readiness of systems for commissioning, including mechanical completion, energization, flushing, cleaning, and pre-start checks.
• Plan and sequence commissioning activities to avoid clashes and minimize impacts on overall project schedule.

Compliance & Quality

• Verify compliance of systems with project specifications, statutory regulations, and applicable international standards.
• Ensure safety requirements are strictly followed during all commissioning activities.
• Provide technical support to resolve system integration and operational issues.

Qualifications

• Bachelors Degree in Mechanical or Electrical Engineering, or a relevant field.
• Minimum of 7–10 years of experience in commissioning of MEP and electrical systems on large-scale projects.
• Proven experience coordinating and supervising specialist subcontractors.
• Strong coordination and leadership skills.
• Ability to review and develop commissioning procedures and test plans
• Excellent communication and reporting skills.
• Sound understanding of commissioning best practices, codes, and standards
• An analytical and problem-solving mindset.

Additional Information

What We Offer

• Competitive Salary
• Comprehensive Benefits Package:
  • Disability Insurance
  • Dental Insurance
  • Extended medical insurance
  • (Optional) RRSP matching
  • Discretionary Bonus

Why OTG?

Welcome to Ontario Transit Group (OTG), located in the heart of Downtown Toronto, where diversity and passion collide. As we work on the groundbreaking Ontario Line project, we prioritize fostering a positive culture. Join us and be part of a team that celebrates our employees, organizes family events, and promotes health and wellness initiatives. Our commitment to personal and professional growth means annual performance reviews, salary increases, comprehensive health benefits, generous RRSP matching, industry education support, and career development opportunities.

OTG uses artificial intelligence (AI) tools as part of the applicant screening process. However, applications are reviewed by a member of our Recruitment team to ensure a fair and thorough assessment.

At OTG, we embrace diversity, recognizing that it strengthens us as a team and as a company. We are an equal-opportunity employer, encouraging applications from all interested candidates. We value Indigenous people, racialized people, neurodivergent people, people with disabilities, and individuals from gender and sexually diverse communities with intersectional identities. OTG is committed to fostering an inclusive, equitable, and accessible environment. If you require accommodation during the selection process, please contact View email address on jobs.smartrecruiters.com. 

If you're ready to be part of our dynamic team in one of the world's most diverse cities, don't wait any longer—apply now!

While we appreciate your interest, only selected candidates will be contacted for interviews. Please note that we do not accept agency submissions.